Fixup channel submit IOCTL syncpoint parameters

The current arguments worked by happenstance as games only ever submit
one syncpoint and request one fence back, if a game were to do something
other than this then the arguments would've been parsed entirely wrong.

src/core/hle/service/nvdrv/devices/nvhost_nvdec_common.cpp

@@ -69,8 +69,7 @@ NvResult nvhost_nvdec_common::Submit(const std::vector<u8>& input, std::vector<u
     std::vector<Reloc> relocs(params.relocation_count);
     std::vector<u32> reloc_shifts(params.relocation_count);
     std::vector<SyncptIncr> syncpt_increments(params.syncpoint_count);
-    std::vector<SyncptIncr> wait_checks(params.syncpoint_count);
-    std::vector<Fence> fences(params.fence_count);
+    std::vector<u32> fence_thresholds(params.fence_count);
 
     // Slice input into their respective buffers
     std::size_t offset = sizeof(IoctlSubmit);
@@ -78,15 +77,13 @@ NvResult nvhost_nvdec_common::Submit(const std::vector<u8>& input, std::vector<u
     offset += SliceVectors(input, relocs, params.relocation_count, offset);
     offset += SliceVectors(input, reloc_shifts, params.relocation_count, offset);
     offset += SliceVectors(input, syncpt_increments, params.syncpoint_count, offset);
-    offset += SliceVectors(input, wait_checks, params.syncpoint_count, offset);
-    offset += SliceVectors(input, fences, params.fence_count, offset);
+    offset += SliceVectors(input, fence_thresholds, params.fence_count, offset);
 
     auto& gpu = system.GPU();
     if (gpu.UseNvdec()) {
         for (std::size_t i = 0; i < syncpt_increments.size(); i++) {
             const SyncptIncr& syncpt_incr = syncpt_increments[i];
-            fences[i].id = syncpt_incr.id;
-            fences[i].value =
+            fence_thresholds[i] =
                 syncpoint_manager.IncreaseSyncpoint(syncpt_incr.id, syncpt_incr.increments);
         }
     }
@@ -98,11 +95,6 @@ NvResult nvhost_nvdec_common::Submit(const std::vector<u8>& input, std::vector<u
                                   cmdlist.size() * sizeof(u32));
         gpu.PushCommandBuffer(cmdlist);
     }
-    if (gpu.UseNvdec()) {
-        fences[0].value = syncpoint_manager.IncreaseSyncpoint(fences[0].id, 1);
-        Tegra::ChCommandHeaderList cmdlist{{(4 << 28) | fences[0].id}};
-        gpu.PushCommandBuffer(cmdlist);
-    }
     std::memcpy(output.data(), &params, sizeof(IoctlSubmit));
     // Some games expect command_buffers to be written back
     offset = sizeof(IoctlSubmit);
@@ -110,8 +102,7 @@ NvResult nvhost_nvdec_common::Submit(const std::vector<u8>& input, std::vector<u
     offset += WriteVectors(output, relocs, offset);
     offset += WriteVectors(output, reloc_shifts, offset);
     offset += WriteVectors(output, syncpt_increments, offset);
-    offset += WriteVectors(output, wait_checks, offset);
-    offset += WriteVectors(output, fences, offset);
+    offset += WriteVectors(output, fence_thresholds, offset);
 
     return NvResult::Success;
 }

src/core/hle/service/nvdrv/devices/nvhost_nvdec_common.h

@@ -56,19 +56,16 @@ protected:
         s32 target{};
         s32 target_offset{};
     };
-    static_assert(sizeof(Reloc) == 0x10, "CommandBuffer has incorrect size");
+    static_assert(sizeof(Reloc) == 0x10, "Reloc has incorrect size");
 
     struct SyncptIncr {
         u32 id{};
         u32 increments{};
+        u32 unk0{};
+        u32 unk1{};
+        u32 unk2{};
     };
-    static_assert(sizeof(SyncptIncr) == 0x8, "CommandBuffer has incorrect size");
-
-    struct Fence {
-        u32 id{};
-        u32 value{};
-    };
-    static_assert(sizeof(Fence) == 0x8, "CommandBuffer has incorrect size");
+    static_assert(sizeof(SyncptIncr) == 0x14, "SyncptIncr has incorrect size");
 
     struct IoctlGetSyncpoint {
         // Input

src/video_core/dirty_flags.h

@@ -38,6 +38,9 @@ enum : u8 {
 
     Shaders,
 
+    // Special entries
+    DepthBiasGlobal,
+
     LastCommonEntry,
 };
 

src/video_core/renderer_vulkan/vk_rasterizer.cpp

@@ -627,9 +627,21 @@ void RasterizerVulkan::UpdateDepthBias(Tegra::Engines::Maxwell3D::Regs& regs) {
     if (!state_tracker.TouchDepthBias()) {
         return;
     }
-    scheduler.Record([constant = regs.polygon_offset_units, clamp = regs.polygon_offset_clamp,
+    float units = regs.polygon_offset_units / 2.0f;
+    const bool is_d24 = regs.zeta.format == Tegra::DepthFormat::S8_UINT_Z24_UNORM ||
+                        regs.zeta.format == Tegra::DepthFormat::D24X8_UNORM ||
+                        regs.zeta.format == Tegra::DepthFormat::D24S8_UNORM ||
+                        regs.zeta.format == Tegra::DepthFormat::D24C8_UNORM;
+    if (is_d24 && !device.SupportsD24DepthBuffer()) {
+        // the base formulas can be obtained from here:
+        //   https://docs.microsoft.com/en-us/windows/win32/direct3d11/d3d10-graphics-programming-guide-output-merger-stage-depth-bias
+        const double rescale_factor =
+            static_cast<double>(1ULL << (32 - 24)) / (static_cast<double>(0x1.ep+127));
+        units = static_cast<float>(static_cast<double>(units) * rescale_factor);
+    }
+    scheduler.Record([constant = units, clamp = regs.polygon_offset_clamp,
                       factor = regs.polygon_offset_factor](vk::CommandBuffer cmdbuf) {
-        cmdbuf.SetDepthBias(constant, clamp, factor / 2.0f);
+        cmdbuf.SetDepthBias(constant, clamp, factor);
     });
 }
 

src/video_core/renderer_vulkan/vk_state_tracker.h

@@ -79,7 +79,8 @@ public:
     }
 
     bool TouchDepthBias() {
-        return Exchange(Dirty::DepthBias, false);
+        return Exchange(Dirty::DepthBias, false) ||
+               Exchange(VideoCommon::Dirty::DepthBiasGlobal, false);
     }
 
     bool TouchBlendConstants() {

src/video_core/texture_cache/texture_cache.h

@@ -221,6 +221,7 @@ void TextureCache<P>::UpdateRenderTargets(bool is_clear) {
         BindRenderTarget(&render_targets.depth_buffer_id, FindDepthBuffer(is_clear));
     }
     const ImageViewId depth_buffer_id = render_targets.depth_buffer_id;
+
     PrepareImageView(depth_buffer_id, true, is_clear && IsFullClear(depth_buffer_id));
 
     for (size_t index = 0; index < NUM_RT; ++index) {
@@ -230,6 +231,8 @@ void TextureCache<P>::UpdateRenderTargets(bool is_clear) {
         maxwell3d.regs.render_area.width,
         maxwell3d.regs.render_area.height,
     };
+
+    flags[Dirty::DepthBiasGlobal] = true;
 }
 
 template <class P>

src/video_core/vulkan_common/vulkan_device.cpp

@@ -623,6 +623,10 @@ Device::Device(VkInstance instance_, vk::PhysicalDevice physical_, VkSurfaceKHR
         is_float16_supported = false;
     }
 
+    supports_d24_depth =
+        IsFormatSupported(VK_FORMAT_D24_UNORM_S8_UINT,
+                          VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT, FormatType::Optimal);
+
     graphics_queue = logical.GetQueue(graphics_family);
     present_queue = logical.GetQueue(present_family);
 }

src/video_core/vulkan_common/vulkan_device.h

@@ -332,6 +332,10 @@ public:
         return sets_per_pool;
     }
 
+    bool SupportsD24DepthBuffer() const {
+        return supports_d24_depth;
+    }
+
 private:
     /// Checks if the physical device is suitable.
     void CheckSuitability(bool requires_swapchain) const;
@@ -425,6 +429,7 @@ private:
     bool has_broken_cube_compatibility{};   ///< Has broken cube compatiblity bit
     bool has_renderdoc{};                   ///< Has RenderDoc attached
     bool has_nsight_graphics{};             ///< Has Nsight Graphics attached
+    bool supports_d24_depth{};              ///< Supports D24 depth buffers.
 
     // Telemetry parameters
     std::string vendor_name;                       ///< Device's driver name.